Snubber for automobiles



w. N. DUNN. SR

SNUBBER FOR AUTOPAOBfiLES Filed A ril 8. 192'! 2 Sheets-Sheet 1' Dec. 6, 1927. mamas W. N. DUNN, 5R w SNUBBER FOR AUTOMOBILES Filed April 8. 1927 2 Sheets-Sheet 2 Patented Dec. 6, 1927.

WILLIAM NELSON DUNN, S3, 01

' savanna,- non,

Application filed April 8,

1 its object toprovide an improved device ofthis. character constructed in such manner as toefiectiyely check excessive rebound of the body oi the vehicle, andto aid in preventing. the transmission of minor ibrans Qft e xleso t e bo y f the ehicle Ihirther objects and advautages oli'the-invention will be setforth in the detaileddescription which follows.

In the accompanying drawings: Fig. 1 is a side elevation illustratingthe application; of a snubbei constructed in accordance with the present invention Fig. 2 is a transverse' Vertical sectional View on line 22 'ofjFig. 1.

Fig. 3 is an end elevation of the tubular extension hereinafter described.

Fig. 4 is a longitudinal vertical section through the main casing of; the snubber.

5 is a'rear elevation of'the snubber.

Fig. 6 is a plan View thereof.

Fig. 7 is a. sectional View upon line 7-7 of Fig. 1a., I Fig. 8 is a transuerse'sectional iew upon line 8-8 of Fig. 7.

Fig. 9 is sectional View of & I I10.Cllfi6(l form of tensioning ineans hereinafter described. I

Fig. 10- is a longitudinal sectional view of a further modified formof tensioning means, and

Fig. 11 is a sectional View of a modified form of friction drum and friction band, hereinafter described. v e I Like numeralsv designate corresponding parts in all of the figures ofthe drawings.

In the drawings, 5 designates one otthe side members ofthe chassis of an automobile and 6 of the axles thereof, such, for example, as thefront aXle, a stub shaft T has, an angular part 8 disposed in a," correspondingly shaped opening 9 of the chassis 5. The stub shaft 7 may be held in; place by any suitable means, such, for example, as by a nut 10 threaded thereon. The shaft carries a collar ll and this collar, in turn, has a disc 12 to .oseillate or turn upon the shaft 7 carries manrmssuae. ivnsr. v imi. 1

Memos-t ies, I 192 7. Serial. no lessee;

drum 13. The end of this band isconn'e'cted y a l n or i; nyjether uit-ab e lement 25 with one end ot a tension spring26i The other end of the spring 26 ls secured to a nut 27 which engagesa tension adjusting.

screw 28, that is mounted-for turning 'nooye me in the nd. @1 29 of hehea ne A squarelea-ther washer 30is secured t0 the nut 26 and its angular shape prevents said.

and; is passedv part way aroundthe frietion nut from turning and suitably guides the: nut and washer 1n the angular bore of the? extension 17. Thus itjjis lllfLIllfQStfhfii} u ning me ent be mpar ed. 9 sc w y endw se movement w ll be LLDQZLAIJLGCLJEO nut 27 to change the tension; of the spring 26,

The band 23inay be n a de of flexible injetal, u a ra s. tor-sampl a d Lm y c ve the drum withfa suitable friction inatei ial such as leather, canv'asfor woven fabric, suchas brake lining. This arrangement-not only increases friction but preyen'ts screechiv ing squeak ng dur ng e. m. i*e u t of. the;

band over the drum.

In Fig. 9, I have illustratedta nioditife d form oi" tensioningn eans for thetiiictifon the nature of a clocl; spring. p

1- eprin 26*,-@ 'reime as to the spring 26, is-conneoted at its out r end to a band 33 whieli may be wound upon a druin 84;, re 'erse movement which isresisted. by a ball and ratchet me 1' i By imparting turning; novein band 23, comprising a spiral spring-.32

is n- 35,..

dru n, through the medium of ail orojther.

tool Pu e 't f al uletei fil 5, i h haf e eo any les e'cl adjustment-may;

friction between the band and drum may be increased by providing the drum 13 with a V-shaped periphery 13 and by providing the band 23" with a V-shaped' working face 23" to co-act with said drum.

The extension 17 of the housing is embraced by a suitable bracket or clamp 37, said bracket carrying an extension 38 which has a ball and socket connection 39 with the upper end of a rod 40. This rod is rendered adjustable as to length by the provision of a turnbuckle 41 and its lower end has a ball and socket connection 42 with a'bracket 43, that is engaged with the axle 6.

Thus it will be seen that the connection between the. axle and the housing 17 is a longitudinally rigid connection, so that the housing 17 will partake of upward movement of the axle 6, as Well as downward movement thereof. This is in contradis tinction tocertain constructions heretofore employed, wherein the'conne'ction between the axle andthe housing was aflexible connection.

. under the rebound of the main springs the pull upon the friction band is from the un yielding point of attachment 24.

Thus the snubber does not appreciably diminish theeifectiveness of the usual main springs of the vehicle, but it acts very promptly to check excessive rebound. In addition therigid connection provided by the rod 40 brings eventhe minor movements of the axle and chassis, under controlof the snubber andaids in decreasing excessive vibration on roads having minor inequalities.

Further adjustment of the action of the snubber may be had byadjustment of bracket 37 on extension 17 it being apparent that if the bracket be IIIOVGCltOWRi'Cl the drum '13 the movement of the band with respect to the drum will be increased.

The end wall 17*" of the extension 17 is. provided with an outstanding lip 1 7 which serves to receive a locking pin 17, said pin passing through the outer end of the screw 28 and holding it against accidental turning movement. The rear face of the disc 13 may, if desired, be provided with pins 13 to take into openings, not shown, in the frame'member 5 of the chassis to aid in preventing turning movement of said disc.-

That is, when the The leather washer 30 not only prevents its associated nut from turning but it prevents rattling of said nut against the wall of the extension 17 It is to be understood that the invention is not limited to the precise construction set forth but that it includes within its purview whatever changes fairly come Within either the terms or the spirit of the appended. claims.

Having described my invention what I claim is:

1. A device of the character described comprising a fixed drum and means for attaching the same to the chassis of an automobile, a housing mounted to turn with respect to said drum, comprising an elongated extension, a tensioning means disposed in said extension, a friction band passed about said drum having one end attached to said tensioning means and the other end attached to said housing and a rigid connection for connecting said extension to a vehicle axle.

2. A device of the character described comprising a stub shaft and means for fixing the same to the chassis of an automobile, a fixed drum secured to said shaft, a sleeve mounted to turn upon said shaft, a housing connected to said sleeve comprisingan elongated extension, a friction band passed around said drum and having one endsee cured to said housing, a tension spring in the elongated extension to which the other end of said band is attached, a nut to which the outer end of the tension spring is connected, an adjusting screw carried by the elongated extension of the housing and engaging said nut, the head of said screw.

being accessible from outside of said housing and a non-metallic washer secured to said nut and of such configuration as to prevent the nut from turning in said extension. Y I

3. A device of the character described comprising a fixed stub'shaft, means for securing the same to the chassis of an automobile, a circular disk SLIPPOl'tGClfIOIIl said stub shaft, a fixed friction drum supported from said disk, a sleeve mounted to turn upon said shaft, a housing fixed to said sleeve and nioving therewith and. comprising a circular casing and an elongated extension, and a closure plate for therear side of said elongated extension carrying a flanged, ing that connected to the circular casing and overlaps the disk.

i. A structure as recited in claim 3 in combination with a friction band within the circular part of the casing engaging the friction disk and having one end secured to the said casing at'the juncture of the circular casing and the elongated extenslon, a tension springto which the other end of said band is connected and which lies longitudi- Lil nally in said elongated extension, an adjusting screw journaled in the end of said elongated extension and having an operating head disposed upon the exterior thereof, a nut to which the outer end of said spring is connected and with which said screw is engaged.

5. A structure as recited in claim 3 in Combination With arigid connection extending between said elongated extension and an axle of the vehicle and having flexible con-c nection With said extension and axle;

In testimony whereof I aflix my signature.

l/VILLIAM NELSON DUNN, SR. 

